Alkane halogenation is a two-step reaction, as shown in the image. Using the table of bond dissociation energies, calcul enthalpy of each step and the enthalpy of the overall reaction. Bond Dissociation Energies (for A-B A•+ • B) Bond broken AH(kJ/mol) Bond brokenAH(kJ/mol) Bond broken AH(kJ/mol) H-H 436 (CH), С -Н (CH,);C-Br 400 Н-Br 366 292 Br-Br 193 Step 1 ΔΗΞ CH3 CH3 -65 H3C- H- H3C- + HBr CH3 CH3 Step 2 AH = CH3 CH3 H3C- + Br2 H3C Br -Br: CH3 CH3 Overall reaction AH = CH3 CH3 H3C H +Br2 H,C- -Br +HBr CH3 CH3 +

Alkane halogenation is a two-step reaction, as shown in the image. Using the table of bond dissociation energies, calcul enthalpy of each step and the enthalpy of the overall reaction. Bond Dissociation Energies (for A-B A•+ • B) Bond broken AH(kJ/mol) Bond brokenAH(kJ/mol) Bond broken AH(kJ/mol) H-H 436 (CH), С -Н (CH,);C-Br 400 Н-Br 366 292 Br-Br 193 Step 1 ΔΗΞ CH3 CH3 -65 H3C- H- H3C- + HBr CH3 CH3 Step 2 AH = CH3 CH3 H3C- + Br2 H3C Br -Br: CH3 CH3 Overall reaction AH = CH3 CH3 H3C H +Br2 H,C- -Br +HBr CH3 CH3 +

Living By Chemistry: First Edition Textbook

1st Edition

ISBN:9781559539418

Author:Angelica Stacy

Publisher:Angelica Stacy

ChapterU5: Fire: Energy , Thermodynamics, And Oxidation-reduction

SectionU5.11: Make It Or Break It: Bond Energy

Problem 9E

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